Schweitzer Engineering Laboratories, Inc.

Andrew W Rash

Mauricio G Silveira

David James Dolezilek

Bharat Nalla

Nishchal Sharma

Glenn C Bethmann

Andrew A Miller

Stephanie L McDaid

Edson L Hernandez Cortinas

Lihua Ran

Rajeev Kumar Babu

This disclosure pertains to systems and methods to detect network errors in a parallel redundant protocol (PRP) network. A node-level redundancy error subsystem of an intelligent electronic device (IED) maintains records (e.g., counts) of information associated with missing duplicate frames expected from node devices on the PRP network via redundant first and second local area networks (LANs). Non-zero counts of missing duplicate frames may be identified as network errors.

Parallel redundancy protocol error detection

The present disclosure relates to systems and methods for testing communication systems. In one embodiment, a communication device tester may include a traffic disciplining subsystem to generate a first stream of data packets satisfying a metric and may communicate the first stream of data packets to a test device in a first test scenario. A delay subsystem may generate a variable delay in a second stream of data packets and communicate the second stream of data packets to the test device in a second test scenario. A data corruption subsystem may corrupt a third stream of data packets and communicate the third stream of data packets to the test device in a third test scenario. A test subsystem may determine whether the test device satisfies at least one criterion of each of the first test scenario, the second test scenario, and the third test scenario.

Communication system tester and related methods

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Pullman, WA, United States of America

Andrew W Rash